They do not have an official schedule the trend has been every other week and this time they decided to push it another week for Easter . So you can go with the trend but there is no guarantee that they will stay with it.

IIf you read that it is very vague and it shows a trend like I have stated , I will stick with my first response . " some sort of " is not an official schedule otherwise we would have had clan wars on Easter or they would have out it out much sooner. Either way it is up to you what you do.

It should be every other week now for the most part. The only reason last week was skipped was due to Easter. From now on expect it to go to the regular flow. You can probably plan 2 wars ahead but I wouldn't go much further.